LS CHEVY LS 5.3 500hp COMPLETE CRATE ENGINE PROBUILT LQ LS2 LS6 6.2 Ls3 LSX ls9

LS Chevy 5.3 500HP Complete Crate Engine | Pro-Built

Five hundred horsepower, fully assembled, and ready to install. No machine shop trips. No parts matching. No wondering whether your combination will actually work when you turn the key.

We build this engine on proven LQ, LS2, LS6, LS3, LSX, and LS9 platforms in displacements from 5.3L through 6.2L. Every unit ships with a documented specification sheet so you know exactly what you paid for.

Call +1 (216) 230-5433 to check current availability and pricing.

Why a Pro-Built Engine Beats a DIY Build

Building 500 horsepower yourself means sourcing a core, paying for machine work, matching components, and then hoping the assembly comes together correctly. Every step adds cost, time, and risk.

This engine removes all of that. The machine work is finished. The components already match. The clearances are set and documented. Consequently, you install an engine instead of managing a second project alongside your build.

In addition, a known output figure lets you plan your transmission, gearing, and rear end before the crate even arrives.

Block Platforms We Build On

Not sure which one fits your build? Call us and we recommend the right platform for your chassis and budget.

Platform Highlights

LQ4 and LQ9 Iron Block

The LQ family comes from GM trucks and vans as a Gen 3 iron block 6.0L. Iron holds bore geometry under heat and load exceptionally well. Because it also costs less than aftermarket alternatives, the LQ delivers strong value at this output level.

LS2 and LS6 Aluminum Blocks

The LS2 powered the 2005 through 2007 Corvette and the 2006 GTO. The LS6 came from the 2001 through 2004 Corvette Z06 with an aggressive factory cam and high-flow heads. Both give you aluminum weight savings with a proven performance pedigree.

LS3 Aluminum Block

The LS3 uses rectangular port heads that flow considerably more air than any cathedral port design. For a naturally aspirated 500 horsepower target, that airflow ceiling gives you genuine headroom rather than a struggle.

LSX Iron Block

GM Performance built the LSX specifically for high-horsepower applications. It is stronger than any production LS block by a wide margin. At 500 horsepower you will not come close to its limit, which means it simply never becomes a concern.

LS9 Aluminum Block

The LS9 block came from the supercharged ZR1 Corvette. GM engineered it for far more than 500 horsepower, and it uses a forged crankshaft and stronger internals from the factory. Because of that, an LS9-based build carries substantial headroom if you ever add boost later.

Build Specifications

Contact us at +1 (216) 230-5433 or Sales@53lsengine.com for exact figures on the current unit.

What Ships With Your Engine

Included: Complete assembled long block with forged internals, cylinder heads fully assembled, performance intake manifold, fuel rails and injectors, valve covers, oil pan, timing cover, harmonic balancer, and your build specification sheet.

Available on request: Engine wiring harness, ECU with base calibration, throttle body, sensors, accessory drive components, and ignition parts.

Sourced separately: Transmission, flexplate or flywheel, motor mounts, headers, fuel pump and lines, radiator, and starter.

Always confirm the full component list in writing before ordering.

What You Need Ready Before Delivery

A tune. The camshaft and induction changes require a calibration built for the combination. A stock tune cannot manage it. Budget for professional dyno tuning.

Fuel delivery. The injectors flow well beyond factory sizing. Your pump, lines, and regulator have to keep up, or the engine runs lean at wide-open throttle.

Exhaust. At 500 horsepower, restrictive exhaust throws away power you already paid for. Note that LS3 and LS9 builds need rectangular port headers specifically.

Cooling. Size your radiator for the output rather than for a stock engine. A marginal system will not hold temperature under sustained hard driving.

Compare Our Other LS Engines

• 5.3 LS Stage 3 Performance Build — BTR cam and 243 heads at a lower price point
• 525 HP Chevrolet Performance LS3 — factory GM new unit with GM warranty
• 510 to 560 HP Pro Built Crate Engine — higher output with Dart block options
• Gen 3 LM7, Gen 4 LH6, and Gen 5 EcoTec3 — stock used engines for factory replacements
• Browse all build engines

Common Questions

Which block should I choose?
The LQ iron block gives the best value. The LS3 flows the most air. The LSX brings the most strength. The LS9 gives you the most headroom if boost is in your future. Call us with your goals and we recommend the fit.

Can I add boost later?
The LS9 and LSX platforms handle boost best because of their block strength and internal specification. Tell us your long-term plan and we build accordingly.

Can I drive it on the street?
Yes, with a matched tune, adequate fuel delivery, and free-flowing exhaust. It is not a mild engine, but it is not race-only either.

Do I need a tune?
Yes. A stock calibration cannot manage this camshaft correctly. Plan for professional tuning as part of your total build cost.

How does it ship?
On a certified freight pallet with all ports plugged and the assembly secured. We ship to all 50 states. Send your ZIP code and we confirm the cost.

What about warranty?
Terms vary by build and intended use. Call us to confirm coverage before purchasing. Also review our refund policy.

Ready to Order

Tell us your chassis, your power target, and your budget. We then confirm the platform, displacement, output figures, component list, pricing, and delivery timing.

Call: +1 (216) 230-5433
Email: Sales@53lsengine.com

Clean pro-built inventory moves quickly. If you have questions before you commit, ask them now.